// The contents of this file are in the public domain. See LICENSE_FOR_EXAMPLE_PROGRAMS.txt
/*
This is an example illustrating the use of the dlib::std_allocator object.
In this example we will create the necessary typedefs to give the
dlib::std_allocator object to the standard string and vector objects
in the STL. Thus we will create versions of std::string and std::vector
that perform all their memory allocations and deallocations via one of
the dlib memory manager objects.
*/// include everything we need for this example
#include<vector>#include<iostream>#include<string>#include<dlib/std_allocator.h>#include<dlib/memory_manager.h>#include<dlib/memory_manager_stateless.h>usingnamespace std;
usingnamespace dlib;
intmain(){// Make a typedef for an allocator that uses the thread safe memory_manager_stateless object with a
// global memory pool. This version of the memory_manager_stateless object keeps everything it allocates
// in a global memory pool and doesn't release any memory until the program terminates.
typedef std_allocator<char, memory_manager_stateless<char>::kernel_2_3a> alloc_char_with_global_memory_pool;
// Now make a typedef for a C++ standard string that uses our new allocator type
typedef std::basic_string<char, char_traits<char>, alloc_char_with_global_memory_pool > dstring;
// typedef another allocator for dstring objects
typedef std_allocator<dstring, memory_manager_stateless<char>::kernel_2_3a> alloc_dstring_with_global_memory_pool;
// Now make a typedef for a C++ standard vector that uses our new allocator type and also contains the new dstring
typedef std::vector<dstring, alloc_dstring_with_global_memory_pool > dvector;
// Now we can use the string and vector we have as we normally would. So for example, I can make a
// dvector and add 4 strings into it like so:
dvector v;
v.push_back("one");
v.push_back("two");
v.push_back("three");
v.push_back("four");
// And now we print out the contents of our vector
for(unsignedlong i =0; i < v.size(); ++i){
cout << v[i] << endl;
}}